Decapitation (from Latin, caput, capitis, meaning head) is the separation of the head from the body. This form of injury invariably results in death, as severing the head deprives all other organs of the involuntary functions that are essential for the body to function while the brain itself is deprived of oxygenated blood. Beheading typically ref... Found on http://en.wikipedia.org/wiki/Decapitation
De·cap`i·ta'tion noun [ Late Latin decapitatio : confer French décapitation .] The act of beheading; beheading. Found on http://www.encyclo.co.uk/webster/D/14